1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
From 6a313b6072925ab757688328b9f91b16d5a39bb3 Mon Sep 17 00:00:00 2001
From: Peter Chen <peter.chen@nxp.com>
Date: Fri, 9 Feb 2018 10:11:32 +0800
Subject: [PATCH] MLK-17380-4 usb: host: xhci: add EH SINGLE_STEP_SET_FEATURE
Test for USB2
This function is similar with EHCI's, but implemented using XHCI.
The USB2 host needs to send SETUP packet first, then wait 15
seconds before DATA (IN) + STATUS stage.
It is needed at USB Certification test for Embedded Host 2.0, and
the detail is at CH6.4.1.1 of On-The-Go and Embedded Host Supplement
to the USB Revision 2.0 Specification
Acked-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
(cherry picked from commit 8d46e3bca527a5d899446d3858274fb5cbab1a1e)
---
drivers/usb/host/xhci-hub.c | 9 ++++
drivers/usb/host/xhci-ring.c | 123 +++++++++++++++++++++++++++++++++++++++++++
drivers/usb/host/xhci.c | 1 +
drivers/usb/host/xhci.h | 10 ++++
4 files changed, 143 insertions(+)
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -1420,6 +1420,15 @@ int xhci_hub_control(struct usb_hcd *hcd
/* 4.19.6 Port Test Modes (USB2 Test Mode) */
if (hcd->speed != HCD_USB2)
goto error;
+#ifdef CONFIG_USB_HCD_TEST_MODE
+ if (test_mode == EHSET_TEST_SINGLE_STEP_SET_FEATURE) {
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ retval = ehset_single_step_set_feature(hcd,
+ wIndex + 1);
+ spin_lock_irqsave(&xhci->lock, flags);
+ break;
+ }
+#endif
if (test_mode > TEST_FORCE_EN || test_mode < TEST_J)
goto error;
retval = xhci_enter_test_mode(xhci, test_mode, wIndex,
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -3592,6 +3592,129 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *
return 0;
}
+#ifdef CONFIG_USB_HCD_TEST_MODE
+/*
+ * This function prepare TRBs and submits them for the
+ * SINGLE_STEP_SET_FEATURE Test.
+ * This is done in two parts: first SETUP req for GetDesc is sent then
+ * 15 seconds later, the IN stage for GetDesc starts to req data from dev
+ *
+ * is_setup : argument decides which of the two stage needs to be
+ * performed; TRUE - SETUP and FALSE - IN+STATUS
+ * Returns 0 if success
+ */
+int xhci_submit_single_step_set_feature(struct usb_hcd *hcd,
+ struct urb *urb, int is_setup)
+{
+ int slot_id;
+ unsigned int ep_index;
+ struct xhci_ring *ep_ring;
+ int ret;
+ struct usb_ctrlrequest *setup;
+ struct xhci_generic_trb *start_trb;
+ int start_cycle;
+ u32 field, length_field, remainder;
+ struct urb_priv *urb_priv;
+ struct xhci_td *td;
+ struct xhci_hcd *xhci = hcd_to_xhci(hcd);
+
+ /* urb_priv will be free after transcation has completed */
+ urb_priv = kzalloc(sizeof(struct urb_priv) +
+ sizeof(struct xhci_td), GFP_KERNEL);
+ if (!urb_priv)
+ return -ENOMEM;
+
+ td = &urb_priv->td[0];
+ urb_priv->num_tds = 1;
+ urb_priv->num_tds_done = 0;
+ urb->hcpriv = urb_priv;
+
+ ep_ring = xhci_urb_to_transfer_ring(xhci, urb);
+ if (!ep_ring) {
+ ret = -EINVAL;
+ goto free_priv;
+ }
+
+ slot_id = urb->dev->slot_id;
+ ep_index = xhci_get_endpoint_index(&urb->ep->desc);
+
+ setup = (struct usb_ctrlrequest *) urb->setup_packet;
+ if (is_setup) {
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ 1, urb, 0, GFP_KERNEL);
+ if (ret < 0)
+ goto free_priv;
+
+ start_trb = &ep_ring->enqueue->generic;
+ start_cycle = ep_ring->cycle_state;
+ /* Save the DMA address of the last TRB in the TD */
+ td->last_trb = ep_ring->enqueue;
+ field = TRB_IOC | TRB_IDT | TRB_TYPE(TRB_SETUP) | start_cycle;
+ /* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+ if ((xhci->hci_version >= 0x100) ||
+ (xhci->quirks & XHCI_MTK_HOST))
+ field |= TRB_TX_TYPE(TRB_DATA_IN);
+
+ queue_trb(xhci, ep_ring, false,
+ setup->bRequestType | setup->bRequest << 8 |
+ le16_to_cpu(setup->wValue) << 16,
+ le16_to_cpu(setup->wIndex) |
+ le16_to_cpu(setup->wLength) << 16,
+ TRB_LEN(8) | TRB_INTR_TARGET(0),
+ /* Immediate data in pointer */
+ field);
+ giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
+ start_cycle, start_trb);
+ return 0;
+ }
+
+ ret = prepare_transfer(xhci, xhci->devs[slot_id],
+ ep_index, urb->stream_id,
+ 2, urb, 0, GFP_KERNEL);
+ if (ret < 0)
+ goto free_priv;
+
+ start_trb = &ep_ring->enqueue->generic;
+ start_cycle = ep_ring->cycle_state;
+ field = TRB_ISP | TRB_TYPE(TRB_DATA);
+
+ remainder = xhci_td_remainder(xhci, 0,
+ urb->transfer_buffer_length,
+ urb->transfer_buffer_length,
+ urb, 1);
+
+ length_field = TRB_LEN(urb->transfer_buffer_length) |
+ TRB_TD_SIZE(remainder) |
+ TRB_INTR_TARGET(0);
+
+ if (urb->transfer_buffer_length > 0) {
+ field |= TRB_DIR_IN;
+ queue_trb(xhci, ep_ring, true,
+ lower_32_bits(urb->transfer_dma),
+ upper_32_bits(urb->transfer_dma),
+ length_field,
+ field | ep_ring->cycle_state);
+ }
+
+ td->last_trb = ep_ring->enqueue;
+ field = TRB_IOC | TRB_TYPE(TRB_STATUS) | ep_ring->cycle_state;
+ queue_trb(xhci, ep_ring, false,
+ 0,
+ 0,
+ TRB_INTR_TARGET(0),
+ field);
+
+ giveback_first_trb(xhci, slot_id, ep_index, 0,
+ start_cycle, start_trb);
+
+ return 0;
+free_priv:
+ xhci_urb_free_priv(urb_priv);
+ return ret;
+}
+#endif /* CONFIG_USB_HCD_TEST_MODE */
+
/*
* The transfer burst count field of the isochronous TRB defines the number of
* bursts that are required to move all packets in this TD. Only SuperSpeed
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -5384,6 +5384,7 @@ static const struct hc_driver xhci_hc_dr
.disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout,
.find_raw_port_number = xhci_find_raw_port_number,
.clear_tt_buffer_complete = xhci_clear_tt_buffer_complete,
+ .submit_single_step_set_feature = xhci_submit_single_step_set_feature,
};
void xhci_init_driver(struct hc_driver *drv,
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -2150,6 +2150,16 @@ int xhci_find_raw_port_number(struct usb
struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd);
void xhci_hc_died(struct xhci_hcd *xhci);
+#ifdef CONFIG_USB_HCD_TEST_MODE
+int xhci_submit_single_step_set_feature(struct usb_hcd *hcd,
+ struct urb *urb, int is_setup);
+#else
+static inline int xhci_submit_single_step_set_feature(struct usb_hcd *hcd,
+ struct urb *urb, int is_setup)
+{
+ return 0;
+}
+#endif
#ifdef CONFIG_PM
int xhci_bus_suspend(struct usb_hcd *hcd);
|
